Home / 14,615.50-20,169.85-8,328.28

Finding the Fourth Proportional to 14,615.50, 20,169.85 and 8,328.28

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Solution

The fourth proportional to 14,615.50, 20,169.85 and 8,328.28 is: 11,493.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.50 : 20,169.85 = 8,328.28 : x
  2. Step 2: Convert to fraction form
    14,615.50/20,169.85 = 8,328.28/x
  3. Step 3: Cross multiply
    14,615.50x = 20,169.85 × 8,328.28
  4. Step 4: Simplify right side
    14,615.50x = 167,980,158.36
  5. Step 5: Solve for x
    x = 167,980,158.36/14,615.50
  6. Step 6: Final answer
    x = 11,493.29

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.